https://github.com/petrhosek closed
https://github.com/llvm/llvm-project/pull/91028
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https://github.com/petrhosek updated
https://github.com/llvm/llvm-project/pull/91028
>From 78193f68a149e378fbb180a1a5fa1f4551f2af66 Mon Sep 17 00:00:00 2001
From: Petr Hosek
Date: Fri, 3 May 2024 15:48:31 -0700
Subject: [PATCH 1/5] [Clang] -fseparate-named-sections option
When set, the compile
@@ -221,6 +221,11 @@ New Compiler Flags
- ``-fexperimental-modules-reduced-bmi`` enables the Reduced BMI for C++20
named modules.
See the document of standard C++ modules for details.
+- ``-fseparate-named-sections`` uses separate unique sections for global
+ symbols in na
@@ -277,6 +277,8 @@ namespace llvm {
/// Use unique names for basic block sections.
unsigned UniqueBasicBlockSectionNames : 1;
+unsigned SeparateNamedSections : 1;
petrhosek wrote:
Done
https://github.com/llvm/llvm-project/pull/91028
https://github.com/petrhosek updated
https://github.com/llvm/llvm-project/pull/91028
>From 78193f68a149e378fbb180a1a5fa1f4551f2af66 Mon Sep 17 00:00:00 2001
From: Petr Hosek
Date: Fri, 3 May 2024 15:48:31 -0700
Subject: [PATCH 1/5] [Clang] -fseparate-named-sections option
When set, the compile
@@ -277,6 +277,8 @@ namespace llvm {
/// Use unique names for basic block sections.
unsigned UniqueBasicBlockSectionNames : 1;
+unsigned SeparateNamedSections : 1;
smithp35 wrote:
Almost all of the other flags have Doxygen comments. Worth somethin
@@ -221,6 +221,11 @@ New Compiler Flags
- ``-fexperimental-modules-reduced-bmi`` enables the Reduced BMI for C++20
named modules.
See the document of standard C++ modules for details.
+- ``-fseparate-named-sections`` uses separate unique sections for global
+ symbols in na
https://github.com/smithp35 commented:
Thanks for working on this! Just a couple of small comment suggestions from me.
https://github.com/llvm/llvm-project/pull/91028
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https://github.com/smithp35 edited
https://github.com/llvm/llvm-project/pull/91028
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@@ -0,0 +1,36 @@
+; Test that global values with explicit sections are placed into unique
sections.
+
+; RUN: llc < %s 2>&1 | FileCheck %s
petrhosek wrote:
Done.
https://github.com/llvm/llvm-project/pull/91028
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@@ -733,16 +733,22 @@ calcUniqueIDUpdateFlagsAndSize(const GlobalObject *GO,
StringRef SectionName,
Ctx.isELFGenericMergeableSection(SectionName);
// If this is the first ocurrence of this section name, treat it as the
// generic section
- if (!SymbolMergeable && !S
https://github.com/petrhosek updated
https://github.com/llvm/llvm-project/pull/91028
>From 78193f68a149e378fbb180a1a5fa1f4551f2af66 Mon Sep 17 00:00:00 2001
From: Petr Hosek
Date: Fri, 3 May 2024 15:48:31 -0700
Subject: [PATCH 1/4] [Clang] -fseparate-named-sections option
When set, the compile
https://github.com/MaskRay edited
https://github.com/llvm/llvm-project/pull/91028
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petrhosek wrote:
> > This is an alternative approach to address the issue described in
> > [discourse.llvm.org/t/rfc-support-for-memory-regions-in-elf/78570](https://discourse.llvm.org/t/rfc-support-for-memory-regions-in-elf/78570)
> > which doesn't require a custom section type.
>
> This RFC
@@ -733,16 +733,22 @@ calcUniqueIDUpdateFlagsAndSize(const GlobalObject *GO,
StringRef SectionName,
Ctx.isELFGenericMergeableSection(SectionName);
// If this is the first ocurrence of this section name, treat it as the
// generic section
- if (!SymbolMergeable && !S
@@ -0,0 +1,36 @@
+; Test that global values with explicit sections are placed into unique
sections.
+
+; RUN: llc < %s 2>&1 | FileCheck %s
MaskRay wrote:
Drop unused `2>&1`
https://github.com/llvm/llvm-project/pull/91028
https://github.com/MaskRay approved this pull request.
https://github.com/llvm/llvm-project/pull/91028
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@@ -75,6 +75,10 @@ static cl::opt JumpTableInFunctionSection(
"jumptable-in-function-section", cl::Hidden, cl::init(false),
cl::desc("Putting Jump Table in function section"));
+static cl::opt UniqueExplicitSections(
+"unique-explicit-sections", cl::Hidden, cl::ini
https://github.com/petrhosek updated
https://github.com/llvm/llvm-project/pull/91028
>From 78193f68a149e378fbb180a1a5fa1f4551f2af66 Mon Sep 17 00:00:00 2001
From: Petr Hosek
Date: Fri, 3 May 2024 15:48:31 -0700
Subject: [PATCH 1/3] [Clang] -fseparate-named-sections option
When set, the compile
llvmbot wrote:
@llvm/pr-subscribers-clang
Author: Petr Hosek (petrhosek)
Changes
When set, the compiler will use separate unique sections for global symbols in
named special sections (e.g. symbols that are annotated with
__attribute__((section(.... Doing so enables linker GC to colle
https://github.com/petrhosek updated
https://github.com/llvm/llvm-project/pull/91028
>From 78193f68a149e378fbb180a1a5fa1f4551f2af66 Mon Sep 17 00:00:00 2001
From: Petr Hosek
Date: Fri, 3 May 2024 15:48:31 -0700
Subject: [PATCH 1/2] [Clang] -fseparate-named-sections option
When set, the compile
@@ -75,6 +75,10 @@ static cl::opt JumpTableInFunctionSection(
"jumptable-in-function-section", cl::Hidden, cl::init(false),
cl::desc("Putting Jump Table in function section"));
+static cl::opt UniqueExplicitSections(
+"unique-explicit-sections", cl::Hidden, cl::ini
MaskRay wrote:
> This is an alternative approach to address the issue described in
> [discourse.llvm.org/t/rfc-support-for-memory-regions-in-elf/78570](https://discourse.llvm.org/t/rfc-support-for-memory-regions-in-elf/78570)
> which doesn't require a custom section type.
This RFC is about `SH
petrhosek wrote:
This is an alternative approach to address the issue described in
https://discourse.llvm.org/t/rfc-support-for-memory-regions-in-elf/78570 which
doesn't require a custom section type.
https://github.com/llvm/llvm-project/pull/91028
_
https://github.com/petrhosek created
https://github.com/llvm/llvm-project/pull/91028
When set, the compiler will use separate unique sections for global symbols in
named special sections (e.g. symbols that are annotated with
__attribute__((section(.... Doing so enables linker GC to collect
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